280505255263 has 2 divisors, whose sum is σ = 280505255264. Its totient is φ = 280505255262.

The previous prime is 280505255213. The next prime is 280505255339. The reversal of 280505255263 is 362552505082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280505255263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280505255213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140252627631 + 140252627632.

It is an arithmetic number, because the mean of its divisors is an integer number (140252627632).

Almost surely, 2^280505255263 is an apocalyptic number.

280505255263 is a deficient number, since it is larger than the sum of its proper divisors (1).

280505255263 is an equidigital number, since it uses as much as digits as its factorization.

280505255263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 280505255263 in words is "two hundred eighty billion, five hundred five million, two hundred fifty-five thousand, two hundred sixty-three".